Depending on how high the fence is and your ability with different vaults there are a number of different things you can do.
If your running straight at it you could kong it if your confident with your ability in kongs. You could also just pop vault it. That might be the easiest if your still beginning. You could also gate vault it. You could speed vault or simple vault it too.
If your just standing right beside it you could monkey vault it.
If your running beside it you could lazy or thief vault it.
When you got a fence like that you have a lot of different options for getting over it. If you don't know what some of the vaults in there are you could always look them up on youtube. It has tons of tutorials to learn all of the vaults. Hope this helps.